Australia could be without David Pocock for next weekend's Bledisloe Cup rematch after the talismanic flanker picked up a knee injury.

The openside suffered the problem in Saturday's 27-19 loss to the All Blacks in Sydney, although he was able to finish the game.

Wallabies boss Robbie Deans will likely turn to Reds scrum-half Will Genia as skipper should Pocock be ruled out after scans on Sunday.

"There's a possibility he may be unavailable," Deans told AFP. "I saw him being assessed and had a quick yarn with him. He came back and he was good. He said he had no problem carrying on and that's what he did."